246 



Turkey Lake as a unit of envinniinent. "'.'5. 



209. 

 Turkey Lake, illustrations of, '95, 216. 217. 

 Turkey Lake, inhabitants of. '95, 2:59. 

 Turkey Lake, plankton of, '9fi, 287. 

 Turkey Lake, variation in, '95. 265. 

 Turkey Lake, work at, '97. 207. 

 Turtles, habits of. '93, 224. 

 Turtles, observations on, '91. 120. 

 Two-ocean pass, '92, 29. 

 Tyloderma foreolatuin. "92, 91. 

 Typhlouiolge. eye of. '98. 251. 

 Typhlotriton spelaeus, eyes of. '98. 252. 



UDEOPSYLLA NIGRA. '92, 153. 



Uline, E. B., '92. 42. 



Ulmus americana. '91. 140. 



Ulrey, A. B., '92, 63; "93, 224. 226. 229; '94, 66, 

 80,135; '95.147,148; '96.224; '97.232. 



rmbelliferae. '91,28. 



ITrabellifers. '91,13. 



TTnconseious mental cerebration, '95, 42. 



"Underwood. L. M.. '91, 83, 89, 92; '92, 41, 48, 

 49; '9.3, 13, 20, .30, 254; '94. 66. 67. 132, 13:?, 144; 

 '96, 171. 



TJnionidae of Ohio River, '94, 139. 



Unionidae, Parvus group of, '95, 108. 



United States coast and geological survey, 

 '91. 26. 



United States Fish Commission, '91. 24. 



United States Fish Commission steamer Al- 

 batross, '92, 56. 



Univalves, fresh water, '93, 150. 



Uranoscopidae, '91, 25. 



Uredineae of Madison and Noble Counties, 

 '98, 186. 



Urinator imbrex, '91, 166. 



Urine, blood in, '91, 25. 



Uroglena in Lafayette, '96, 56. 



VALENCES, determination of. '92. 169. 

 Value of seed characters in determining 



specific rank in the genus Plantago, '94, 67. 

 Value of steam i)ipe in the smokebox of the 



locomotive, '93, 271. 

 Vanderburgh County mounds, '96, 68. 

 Van der Waal's equation, '92, 25. 

 Van Nuys, T. C, '91. 51, 48; '93, 262, 265. 

 Vapor densities, determination of, '00, 95. 

 Variations in the color pattern of Etheos- 



toma caprodes. '93, 231. 

 Variation in Etheostoma. '94, 1:55. 

 Variation of Ethiostoma caprodes, '95, 278. 

 Variation in Leueiicus, '94, 87. 

 Variations of Polyporus Lucidus, '94, 132. 

 Variation of species, two cases of. '98, 288. 



A'ariation of a standard thermometer, '95,63. 

 Variations in strength of timber for differ- 

 ent parts of the cross section. '93, 268. 

 Variation, the study of. '95. 265. 

 Veateh. Arthur C. '97. 266. 

 Vegetable and mineral matter from a snow 



storm. '92.29. 

 Vegetable diet, indigestible structures, etc., 



'98, 62. 

 Vegetable physiology, new apparatus for, 



'9t, 62. 

 A'egetable powders, examination of, '00, 120. 

 Vegetable powders, staining of, '00, 120. 

 Vegetation house as an aid in research, '94, 



138. 

 Venous sinuses, supply of blood to, '98, 229. 

 Veratum woodii, '91. 29. 

 Vermillion, Newt., notes on, '91, 144. 

 Vernonia fasciculata, '92, 132. 

 Vernonia, heads of. methods of infiltrating 



and staining, in toto, '94, 120. 

 Vernonica pascieulata. '91, 144. 

 Vertebrae in fishes, '91, 24. 

 Vertebrates, cold blooded of Winona Lake, 



'00. 218. 

 Vesuvian cycle, '98, 72. 

 Vigo County Compositae. '91, 15. 

 Vigo County drift, '91. 28. 

 Vigo County fish, '91. 19. 

 Vigo County geology. '91.28. 

 Vigo County, notes on the reptilian fauna of, 



'94, 68. 

 Viola pedata, '91. 30. 

 Viscosity, empirical formula for, '95, 84. 

 Viscosity of a polarized dielectric. '95. 77. 

 Viviparidae. geographic and hypsometric 



distribution of, in the U, S„ '93, 225. 

 Volatile matter in bituminous coal, '96, 113. 

 Volumetric determination of phosphorus in 



steel, '94, 51. 

 Voris. J. H., '98, 233. 



AVABASH COIINTY, additions to fish fauna 



of, '94, 68. 

 Wabash County, batrachians and reptiles of, 



'94, 80. 

 Wabash County, birds of, '94, 80; '95, 148. 

 Wabash County, fishes of, '93, 229. 

 Wabash County, occurrence of whistling 



swan in, '94,80. 

 Wabash County, Russian thistle, '96, 224. 

 Wabash County, the flowering plants of, '94, 



m. 



Wabash drainage system, development of, 



'00, 184. 

 Wabash Erie divide, '91, 18. 



